Axia IP-Intercom System User's Guide download pdf (Page 46)

Connecting GPIO • 38

Version 1.2 July 2010

Input Connections

Current on these inputs must be limited to 20 mA

or less, through the use of a current-limiting resistor. An

external power source (24 volts DC maximum) is rec-

ommended for all inputs and outputs, to prevent ground

loops between equipment.

However, if customer equipment is completely iso-

lated, using power from the GPIO port connectors is

acceptable. Figure B-4 shows details for both types of

connections:

Figure B-4 GPIO input connections

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 52

IP-Intercom System 1
Customer Service 3
Introduction • iv 4
Warranty 4
About This Manual 4
Table of Contents 5
. . . . . vii 5
Mcrhn ps 6
Sp,  tn  n l 6
A  roac day 6
Introduction • vii 7
Wh s  ne 8
 n  rng? 8
Chapter One: 9
Front Panel Connectors 10
Intercom Channel Controls 10
Livewire Status Indicators 11
ID Button 12
GPIO Port 13
AC (Mains) Power 13
Ferl pr 14
Chapter Two: 15
Version 1.2 July 2010 16
Figure 2-3: IC.20 Memu Tree 17
What’s Next 19
I r t  20
ig  hv tr 20
Chapter Three: 21
3: Advanced Programming • 14 22
Home Page 22
Intercom Conguration Page 22
3: Advanced Programming • 15 23
3: Advanced Programming • 16 24
External Sources Page 24
3: Advanced Programming • 17 25
Key Assign Page (IC.20) 25
3: Advanced Programming • 18 26
Key Assign Page (IC.1) 26
Livewire GPIO Page 26
3: Advanced Programming • 19 27
3: Advanced Programming • 20 28
3: Advanced Programming • 21 29
3: Advanced Programming • 22 30
System Conguration Page 30
3: Advanced Programming • 23 31
IC.10X Expander Chassis 32
3: Advanced Programming • 25 33
IP Address 33
Web Page Conguration 33
Element IP-Intercom Modules 34
3: Advanced Programming • 27 35
Channel 35
Assignment 35
3: Advanced Programming • 28 36
GPIO Conguration 36
3: Advanced Programming • 29 37
Intercom Livewire Sources 37
3: Advanced Programming • 30 38
Unbalanced Connections 39
Unbalanced Connections • 32 40
Appendix B: Connecting GPIO 41
Assigning GPIO 42
Connecting GPIO • 35 43
GPIO Snake 43
Virtual GPIO Connections 43
Connecting GPIO • 36 44
Connecting GPIO • 37 45
Input Connections 46
Output Connections 47
Connecting GPIO • 40 48
Speciﬁcations and Warranty 49
Axia System Speciﬁcations 49
Axia Limited Warranty 51

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